CPU Configuration Guidelines for vPars

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row containing the name of the vPar with the value under the Num CPU’s column. This value is the
current number of CPU’s that the vPar owns and it is maintained across OS boots.
The following are definitions of configuration parameters for vPar CPU’s.
• min – user configurable setting for the minimum number of CPU’s that are assigned to a vPar.
• max – user configurable setting for the maximum number of CPU’s that are assigned to a
vPar.
• num – vPar monitor count of CPU’s that are presently assigned to a vPar.
2.3 Count and Path Based Assignment of CPU’s
In addition to bound and floating attributes, CPU’s can be assigned to a vPar by count or by
hardware path. Count based CPU’s are chosen by the vPar’s monitor and this is the default method of
assigning CPU’s to a vPar. For example, if we start with the configuration shown in Figure 1, and the
command shown in Figure 2 is used to add two count based CPU’s to the vPar named vpolyc01. The
vparstatus output in Figure 3 shows that the CPU’s were added to vpolyc01 under the monitor
assigned category.
On the other hand, the vPar’s administrator could also assign CPU’s from the available pool by
hardware path. Figure 4 shows the output of the vparstatus –A command which is used to display
available resources in the hard partition. Notice that the CPU’s 0.121, 0.122, and 2.122 are in the
available pool and Figure 5 shows the command to assign CPU’s 0.121 and 0.122 to the vPar
named vpolyc01. The vparstatus output in Figure 5 shows that 2 user assigned CPU’s have been
assigned to vpolyc01.
Figure 1. The CPU configuration for vpolyc01 before the addition of 2 CPU’s.